ASP.NET Tutorial/Configuration/trace

To enable application-level tracing

File: Web.Config
<configuration>
    <system.web>
        <trace enabled="true" />
    </system.web>
</configuration>

Trace configuration

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.web>
    <trace 
            enabled="true" 
            localOnly="true" 
            pageOutput="false" 
            requestLimit="10" 
            traceMode="SortByTime"/>
  </system.web>
</configuration>